From 8da919799e828fc2d00a23c0efa741a8aa021f10 Mon Sep 17 00:00:00 2001 From: Dnomd343 Date: Sun, 24 Sep 2023 16:53:12 +0800 Subject: [PATCH] perf: md5 implement split --- main.cc | 10 ++ md5.cc | 50 +++++++++ md5.cpp | 303 ---------------------------------------------------- md5.h | 16 --- md5_impl.cc | 210 ++++++++++++++++++++++++++++++++++++ md5def.h | 13 +++ md5sum.h | 12 +++ 7 files changed, 295 insertions(+), 319 deletions(-) create mode 100644 main.cc create mode 100644 md5.cc delete mode 100644 md5.cpp delete mode 100644 md5.h create mode 100644 md5_impl.cc create mode 100644 md5def.h create mode 100644 md5sum.h diff --git a/main.cc b/main.cc new file mode 100644 index 0000000..88b1ca2 --- /dev/null +++ b/main.cc @@ -0,0 +1,10 @@ +#include +#include "md5sum.h" + +int main() { + auto ret = md5sum("dnomd343"); + std::cout << ret << std::endl; + + auto val = md5file("/Users/jucong.lin/klotski/third_party/md5sum/343.txt"); + std::cout << val << std::endl; +} diff --git a/md5.cc b/md5.cc new file mode 100644 index 0000000..4113085 --- /dev/null +++ b/md5.cc @@ -0,0 +1,50 @@ +#include "md5sum.h" +#include "md5def.h" + +static char hb2hex(uint8_t hb) { + hb &= 0xF; + return hb < 10 ? '0' + hb : hb - 10 + 'a'; +} + +std::string md5sum(const std::string &dat) { + return md5sum(dat.c_str(), dat.length()); +} + +std::string md5sum(const void *dat, size_t len) { + uint8_t out[16]; + md5_bin(dat, len, out); + + std::string res; + for (auto x : out) { + res.push_back(hb2hex(x >> 4)); + res.push_back(hb2hex(x)); + } + return res; +} + +std::string md5file(const char *filename) { + std::FILE *file = std::fopen(filename, "rb"); + std::string res = md5file(file); + std::fclose(file); + return res; +} + +std::string md5file(std::FILE *file) { + MD5_CTX c; + md5_init(&c); + + uint8_t out[16]; + size_t len = 0; + char buff[BUFSIZ]; + while ((len = std::fread(buff, sizeof(char), BUFSIZ, file)) > 0) { + md5_update(&c, buff, len); + } + md5_final(out, &c); + + std::string res; + for (auto x : out) { + res.push_back(hb2hex(x >> 4)); + res.push_back(hb2hex(x)); + } + return res; +} diff --git a/md5.cpp b/md5.cpp deleted file mode 100644 index 25e679d..0000000 --- a/md5.cpp +++ /dev/null @@ -1,303 +0,0 @@ -#include "md5.h" - -#ifndef HAVE_OPENSSL - - #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) - #define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y)))) - #define H(x, y, z) ((x) ^ (y) ^ (z)) - #define I(x, y, z) ((y) ^ ((x) | ~(z))) - #define STEP(f, a, b, c, d, x, t, s) \ - (a) += f((b), (c), (d)) + (x) + (t); \ - (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \ - (a) += (b); - - #if defined(__i386__) || defined(__x86_64__) || defined(__vax__) - #define SET(n) \ - (*(MD5_u32 *)&ptr[(n) * 4]) - #define GET(n) \ - SET(n) - #else - #define SET(n) \ - (ctx->block[(n)] = \ - (MD5_u32)ptr[(n) * 4] | \ - ((MD5_u32)ptr[(n) * 4 + 1] << 8) | \ - ((MD5_u32)ptr[(n) * 4 + 2] << 16) | \ - ((MD5_u32)ptr[(n) * 4 + 3] << 24)) - #define GET(n) \ - (ctx->block[(n)]) - #endif - - typedef unsigned int MD5_u32; - - typedef struct { - MD5_u32 lo, hi; - MD5_u32 a, b, c, d; - unsigned char buffer[64]; - MD5_u32 block[16]; - } MD5_CTX; - - static void MD5_Init(MD5_CTX *ctx); - static void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size); - static void MD5_Final(unsigned char *result, MD5_CTX *ctx); - - static const void *body(MD5_CTX *ctx, const void *data, unsigned long size){ - const unsigned char *ptr; - MD5_u32 a, b, c, d; - MD5_u32 saved_a, saved_b, saved_c, saved_d; - - ptr = (const unsigned char*)data; - - a = ctx->a; - b = ctx->b; - c = ctx->c; - d = ctx->d; - - do { - saved_a = a; - saved_b = b; - saved_c = c; - saved_d = d; - - STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7) - STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12) - STEP(F, c, d, a, b, SET(2), 0x242070db, 17) - STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22) - STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7) - STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12) - STEP(F, c, d, a, b, SET(6), 0xa8304613, 17) - STEP(F, b, c, d, a, SET(7), 0xfd469501, 22) - STEP(F, a, b, c, d, SET(8), 0x698098d8, 7) - STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12) - STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17) - STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22) - STEP(F, a, b, c, d, SET(12), 0x6b901122, 7) - STEP(F, d, a, b, c, SET(13), 0xfd987193, 12) - STEP(F, c, d, a, b, SET(14), 0xa679438e, 17) - STEP(F, b, c, d, a, SET(15), 0x49b40821, 22) - STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5) - STEP(G, d, a, b, c, GET(6), 0xc040b340, 9) - STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14) - STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20) - STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5) - STEP(G, d, a, b, c, GET(10), 0x02441453, 9) - STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14) - STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20) - STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5) - STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9) - STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14) - STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20) - STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5) - STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9) - STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14) - STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20) - STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4) - STEP(H, d, a, b, c, GET(8), 0x8771f681, 11) - STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16) - STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23) - STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4) - STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11) - STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16) - STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23) - STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4) - STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11) - STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16) - STEP(H, b, c, d, a, GET(6), 0x04881d05, 23) - STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4) - STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11) - STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16) - STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23) - STEP(I, a, b, c, d, GET(0), 0xf4292244, 6) - STEP(I, d, a, b, c, GET(7), 0x432aff97, 10) - STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15) - STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21) - STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6) - STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10) - STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15) - STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21) - STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6) - STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10) - STEP(I, c, d, a, b, GET(6), 0xa3014314, 15) - STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21) - STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6) - STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10) - STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15) - STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21) - - a += saved_a; - b += saved_b; - c += saved_c; - d += saved_d; - - ptr += 64; - } while (size -= 64); - - ctx->a = a; - ctx->b = b; - ctx->c = c; - ctx->d = d; - - return ptr; - } - - void MD5_Init(MD5_CTX *ctx){ - ctx->a = 0x67452301; - ctx->b = 0xefcdab89; - ctx->c = 0x98badcfe; - ctx->d = 0x10325476; - - ctx->lo = 0; - ctx->hi = 0; - } - - void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size){ - MD5_u32 saved_lo; - unsigned long used, free; - - saved_lo = ctx->lo; - if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo) - ctx->hi++; - ctx->hi += size >> 29; - used = saved_lo & 0x3f; - - if (used){ - free = 64 - used; - if (size < free) { - memcpy(&ctx->buffer[used], data, size); - return; - } - - memcpy(&ctx->buffer[used], data, free); - data = (unsigned char *)data + free; - size -= free; - body(ctx, ctx->buffer, 64); - } - - if (size >= 64) { - data = body(ctx, data, size & ~(unsigned long)0x3f); - size &= 0x3f; - } - - memcpy(ctx->buffer, data, size); - } - - void MD5_Final(unsigned char *result, MD5_CTX *ctx){ - unsigned long used, free; - used = ctx->lo & 0x3f; - ctx->buffer[used++] = 0x80; - free = 64 - used; - - if (free < 8) { - memset(&ctx->buffer[used], 0, free); - body(ctx, ctx->buffer, 64); - used = 0; - free = 64; - } - - memset(&ctx->buffer[used], 0, free - 8); - - ctx->lo <<= 3; - ctx->buffer[56] = ctx->lo; - ctx->buffer[57] = ctx->lo >> 8; - ctx->buffer[58] = ctx->lo >> 16; - ctx->buffer[59] = ctx->lo >> 24; - ctx->buffer[60] = ctx->hi; - ctx->buffer[61] = ctx->hi >> 8; - ctx->buffer[62] = ctx->hi >> 16; - ctx->buffer[63] = ctx->hi >> 24; - body(ctx, ctx->buffer, 64); - result[0] = ctx->a; - result[1] = ctx->a >> 8; - result[2] = ctx->a >> 16; - result[3] = ctx->a >> 24; - result[4] = ctx->b; - result[5] = ctx->b >> 8; - result[6] = ctx->b >> 16; - result[7] = ctx->b >> 24; - result[8] = ctx->c; - result[9] = ctx->c >> 8; - result[10] = ctx->c >> 16; - result[11] = ctx->c >> 24; - result[12] = ctx->d; - result[13] = ctx->d >> 8; - result[14] = ctx->d >> 16; - result[15] = ctx->d >> 24; - memset(ctx, 0, sizeof(*ctx)); - } -#else - #include -#endif - - -using namespace std; - -/* Return Calculated raw result(always little-endian), the size is always 16 */ -void md5bin(const void* dat, size_t len, unsigned char out[16]) { - MD5_CTX c; - MD5_Init(&c); - MD5_Update(&c, dat, len); - MD5_Final(out, &c); -} - -static char hb2hex(unsigned char hb) { - hb = hb & 0xF; - return hb < 10 ? '0' + hb : hb - 10 + 'a'; -} - -string md5file(const char* filename){ - std::FILE* file = std::fopen(filename, "rb"); - string res = md5file(file); - std::fclose(file); - return res; -} - -string md5file(std::FILE* file){ - - MD5_CTX c; - MD5_Init(&c); - - char buff[BUFSIZ]; - unsigned char out[16]; - size_t len = 0; - while( ( len = std::fread(buff ,sizeof(char), BUFSIZ, file) ) > 0) { - MD5_Update(&c, buff, len); - } - MD5_Final(out, &c); - - string res; - for(size_t i = 0; i < 16; ++ i) { - res.push_back(hb2hex(out[i] >> 4)); - res.push_back(hb2hex(out[i])); - } - return res; -} - -string md5(const void* dat, size_t len) { - string res; - unsigned char out[16]; - md5bin(dat, len, out); - for(size_t i = 0; i < 16; ++ i) { - res.push_back(hb2hex(out[i] >> 4)); - res.push_back(hb2hex(out[i])); - } - return res; -} - -std::string md5(std::string dat){ - return md5(dat.c_str(), dat.length()); -} - -/* Generate shorter md5sum by something like base62 instead of base16 or base10. 0~61 are represented by 0-9a-zA-Z */ -string md5sum6(const void* dat, size_t len){ - static const char* tbl = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; - string res; - unsigned char out[16]; - md5bin(dat, len, out); - for(size_t i = 0; i < 6; ++i) { - res.push_back(tbl[out[i] % 62]); - } - return res; -} - -std::string md5sum6(std::string dat){ - return md5sum6(dat.c_str(), dat.length() ); -} \ No newline at end of file diff --git a/md5.h b/md5.h deleted file mode 100644 index 90d5ec4..0000000 --- a/md5.h +++ /dev/null @@ -1,16 +0,0 @@ -#ifndef MD5_H -#define MD5_H - -#define _CRT_SECURE_NO_WARNINGS - -#include -#include - -std::string md5(std::string dat); -std::string md5(const void* dat, size_t len); -std::string md5file(const char* filename); -std::string md5file(std::FILE* file); -std::string md5sum6(std::string dat); -std::string md5sum6(const void* dat, size_t len); - -#endif // end of MD5_H diff --git a/md5_impl.cc b/md5_impl.cc new file mode 100644 index 0000000..d408c8e --- /dev/null +++ b/md5_impl.cc @@ -0,0 +1,210 @@ +#include +#include +#include "md5def.h" + +#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) +#define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y)))) +#define H(x, y, z) ((x) ^ (y) ^ (z)) +#define I(x, y, z) ((y) ^ ((x) | ~(z))) + +#define STEP(f, a, b, c, d, x, t, s) \ + (a) += f((b), (c), (d)) + (x) + (t); \ + (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \ + (a) += (b); + +#if defined(__i386__) || defined(__x86_64__) || defined(__vax__) +#define SET(n) (*(uint32_t*)&ptr[(n) * 4]) +#define GET(n) SET(n) +#else +#define SET(n) (ctx->block[(n)] = (uint32_t)ptr[(n) * 4] | \ + ((uint32_t)ptr[(n) * 4 + 1] << 8) | \ + ((uint32_t)ptr[(n) * 4 + 2] << 16) | \ + ((uint32_t)ptr[(n) * 4 + 3] << 24)) +#define GET(n) (ctx->block[(n)]) +#endif + +static const void* md5_body(MD5_CTX *ctx, const void *data, uint32_t size) { + const auto *ptr = (uint8_t*)data; + + uint32_t a = ctx->a; + uint32_t b = ctx->b; + uint32_t c = ctx->c; + uint32_t d = ctx->d; + + do { + uint32_t saved_a = a; + uint32_t saved_b = b; + uint32_t saved_c = c; + uint32_t saved_d = d; + + STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7) + STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12) + STEP(F, c, d, a, b, SET(2), 0x242070db, 17) + STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22) + STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7) + STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12) + STEP(F, c, d, a, b, SET(6), 0xa8304613, 17) + STEP(F, b, c, d, a, SET(7), 0xfd469501, 22) + STEP(F, a, b, c, d, SET(8), 0x698098d8, 7) + STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12) + STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17) + STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22) + STEP(F, a, b, c, d, SET(12), 0x6b901122, 7) + STEP(F, d, a, b, c, SET(13), 0xfd987193, 12) + STEP(F, c, d, a, b, SET(14), 0xa679438e, 17) + STEP(F, b, c, d, a, SET(15), 0x49b40821, 22) + STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5) + STEP(G, d, a, b, c, GET(6), 0xc040b340, 9) + STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14) + STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20) + STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5) + STEP(G, d, a, b, c, GET(10), 0x02441453, 9) + STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14) + STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20) + STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5) + STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9) + STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14) + STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20) + STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5) + STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9) + STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14) + STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20) + STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4) + STEP(H, d, a, b, c, GET(8), 0x8771f681, 11) + STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16) + STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23) + STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4) + STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11) + STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16) + STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23) + STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4) + STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11) + STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16) + STEP(H, b, c, d, a, GET(6), 0x04881d05, 23) + STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4) + STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11) + STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16) + STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23) + STEP(I, a, b, c, d, GET(0), 0xf4292244, 6) + STEP(I, d, a, b, c, GET(7), 0x432aff97, 10) + STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15) + STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21) + STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6) + STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10) + STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15) + STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21) + STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6) + STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10) + STEP(I, c, d, a, b, GET(6), 0xa3014314, 15) + STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21) + STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6) + STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10) + STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15) + STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21) + + a += saved_a; + b += saved_b; + c += saved_c; + d += saved_d; + + ptr += 64; + } while (size -= 64); + + ctx->a = a; + ctx->b = b; + ctx->c = c; + ctx->d = d; + + return ptr; +} + +void md5_init(MD5_CTX *ctx) { + ctx->a = 0x67452301; + ctx->b = 0xefcdab89; + ctx->c = 0x98badcfe; + ctx->d = 0x10325476; + + ctx->lo = 0; + ctx->hi = 0; +} + +void md5_update(MD5_CTX *ctx, const void *data, uint32_t size) { + uint32_t saved_lo = ctx->lo; + uint32_t used = saved_lo & 0x3f; + if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo) + ctx->hi++; + ctx->hi += size >> 29; + + if (used) { + uint32_t free = 64 - used; + if (size < free) { + memcpy(&ctx->buffer[used], data, size); + return; + } + + memcpy(&ctx->buffer[used], data, free); + data = (uint8_t*)data + free; + size -= free; + md5_body(ctx, ctx->buffer, 64); + } + + if (size >= 64) { + data = md5_body(ctx, data, size & ~(uint32_t)0x3f); + size &= 0x3f; + } + + memcpy(ctx->buffer, data, size); +} + +void md5_final(uint8_t *result, MD5_CTX *ctx) { + uint32_t used = ctx->lo & 0x3f; + ctx->buffer[used++] = 0x80; + uint32_t free = 64 - used; + + if (free < 8) { + memset(&ctx->buffer[used], 0, free); + md5_body(ctx, ctx->buffer, 64); + used = 0; + free = 64; + } + + memset(&ctx->buffer[used], 0, free - 8); + + ctx->lo <<= 3; + ctx->buffer[56] = ctx->lo; + ctx->buffer[57] = ctx->lo >> 8; + ctx->buffer[58] = ctx->lo >> 16; + ctx->buffer[59] = ctx->lo >> 24; + ctx->buffer[60] = ctx->hi; + ctx->buffer[61] = ctx->hi >> 8; + ctx->buffer[62] = ctx->hi >> 16; + ctx->buffer[63] = ctx->hi >> 24; + + md5_body(ctx, ctx->buffer, 64); + + result[0] = ctx->a; + result[1] = ctx->a >> 8; + result[2] = ctx->a >> 16; + result[3] = ctx->a >> 24; + result[4] = ctx->b; + result[5] = ctx->b >> 8; + result[6] = ctx->b >> 16; + result[7] = ctx->b >> 24; + result[8] = ctx->c; + result[9] = ctx->c >> 8; + result[10] = ctx->c >> 16; + result[11] = ctx->c >> 24; + result[12] = ctx->d; + result[13] = ctx->d >> 8; + result[14] = ctx->d >> 16; + result[15] = ctx->d >> 24; + + memset(ctx, 0, sizeof(*ctx)); +} + +void md5_bin(const void *dat, size_t len, uint8_t out[16]) { + MD5_CTX c; + md5_init(&c); + md5_update(&c, dat, len); + md5_final(out, &c); +} diff --git a/md5def.h b/md5def.h new file mode 100644 index 0000000..2d7e194 --- /dev/null +++ b/md5def.h @@ -0,0 +1,13 @@ +#pragma once + +typedef struct { + uint32_t lo, hi; + uint32_t a, b, c, d; + uint8_t buffer[64]; + uint32_t block[16]; +} MD5_CTX; + +void md5_init(MD5_CTX *ctx); +void md5_final(uint8_t *result, MD5_CTX *ctx); +void md5_update(MD5_CTX *ctx, const void *data, uint32_t size); +void md5_bin(const void *dat, size_t len, uint8_t out[16]); diff --git a/md5sum.h b/md5sum.h new file mode 100644 index 0000000..3d521df --- /dev/null +++ b/md5sum.h @@ -0,0 +1,12 @@ +#ifndef MD5_H +#define MD5_H + +#include + +std::string md5sum(const std::string &dat); +std::string md5sum(const void *dat, size_t len); + +std::string md5file(std::FILE *file); +std::string md5file(const char *filename); + +#endif // end of MD5_H